. Fossil plants : for students of botany and geology . Paleobotany. 386 ABIETINEAE [CH. Though superficially very like a cone of Cedrus (fig. 779), Pityo- strobus Leckenhyi also strongly resembles some species of Picea and Abies in which the bract-scales do not project beyond the semini- ferous scales. I have adopted the non-committal term Pityostrobus as it is by no means certain that Carruthers' type is more closely allied to Cedrus than to Abies. Dr Stopes includes in Cedrostrobus a second species, Cedrostrobus Mantelli^, from the Lower Greensand of Kent which Carruthers originally named Pi
. Fossil plants : for students of botany and geology . Paleobotany. 386 ABIETINEAE [CH. Though superficially very like a cone of Cedrus (fig. 779), Pityo- strobus Leckenhyi also strongly resembles some species of Picea and Abies in which the bract-scales do not project beyond the semini- ferous scales. I have adopted the non-committal term Pityostrobus as it is by no means certain that Carruthers' type is more closely allied to Cedrus than to Abies. Dr Stopes includes in Cedrostrobus a second species, Cedrostrobus Mantelli^, from the Lower Greensand of Kent which Carruthers originally named Pinites: she compares with it a Potomac cone described by Berry^ as Cedrus Leei. But these species do not afford any proof of close relationship to the recent genus Cedrus. It is probable that some of the numerous cones found in Lower Cre- taceous rocks belong to trees having the characters of Cedrus, though in the absence of more decisive evidence than has so far been furnished it would seem preferable to retain the wider desig- nation Pityostrobus. Pityostrobus Benstedi (Mantell). The small oval cone on which Mantell* founded the species Abies Benstedi is from the Lower Greensand of Kent. It was subsequently. Fig. 780. Pityostrobus Benstedi. Tangential section showing, os, ovuliferous scale; bs, bract-scale; o, the two ovules on the ovuliferous scale; e, endosperm; u\ wing. (After Stopes; x8.) described by Carruthers* as Pinites and regarded by him as prob- ably more nearly allied to Cedrus than to Pinus. Dr Stopes^ has recently made a further examination of the structure of this type 1 Stopes (15) p. 145, text-fig. 40. = Berry (11) PI. LXX. fig. 4. ' ManteU (46) p. 52, PI. ii. fig. 2. * Carruthers (66^) p. 641. s Stopes (15) p. 130, text-figs, 32, 33; Pis, x,, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original w
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